Rings round? Rubbish! (4-4)
I believe the answer is:
Here is my best explanation:
This might be a double definition.
'rings round?' is the first definition.
The definition and answer can be both to do with communicating as well as being verbs in their base form.
Perhaps they are linked in a way I don't understand?
'rubbish' is the second definition.
(to pooh-pooh can mean to rubbish something)